I guess I never really answered part of your question.
I thought that it worked well, although one thing confused me initially. When the stat block is generated, I had no idea where it was. If it could be visible, or a little popup that says "The Statblock is ready and currently located in the clipboard to be pasted into a document", it would eliminate some of the initial confusion. Other than that, I though it was a nifty little program, and useful. I'll probably leave the Konfabulator installer on my PC and just install it when I need to generate a bunch of stat blocks all at once, and then uninstall it so I don't have to deal with the onscreen message.
the problem I had with the message was that it always showed up overtop of some of the most used shortcuts on my desktop, and I kept having to move it out of the way everytime I wanted to use them.